Triangle Congruence: SSS and HL

Question 1

The SSS proof used the rigid transformations illustrated here. Which transformations are used?

Revolt · Accepted Answer

translation, then rotation, then reflection

Question 2

Which of the following pairs of values for x and y would justify the claim that the two triangles are congruent?

Revolt · Accepted Answer

x = 3, y = 11

Question 3

Which pair of triangles can be proven congruent by the HL theorem?

Revolt · Accepted Answer

[Image: 2 right triangles have a congruent hypotenuse and ...]

Question 4

Could these triangles be congruent?

Revolt · Accepted Answer

no, because the hypotenuses must have different lengths

Question 5

Complete the missing parts of the paragraph proof.

Revolt · Accepted Answer

Draw a perpendicular from P to AB. Label the intersection C. We are given that PA = PB, so PA ≅ PB by the definition of . We know that angles PCA and PCB are right angles by the definition of . PC ≅ P: congruent segments; Draw a perpendicular from P to AB. Label the intersection C. We are given that PA = PB, so PA ≅ PB by the definition of . We know that angles PCA and PCB are right angles by the definition of . PC ≅ P: perpendicular lines; Draw a perpendicular from P to AB. Label the intersection C. We are given that PA = PB, so PA ≅ PB by the definition of . We know that angles PCA and PCB are right angles by the definition of . PC ≅ P: reflexive property; Draw a perpendicular from P to AB. Label the intersection C. We are given that PA = PB, so PA ≅ PB by the definition of . We know that angles PCA and PCB are right angles by the definition of . PC ≅ P: CPCTC

Triangle Congruence: SSS and HL Answers

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